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Fetching And Parsing Data From Json Api In Faster Way in Swift

-2

I working on a IOS project based on json API totally. I have completed my project almost but i have an issue regarding json API response rate, it is very slow and it takes time to load data in tableview. I am looking for a best way to fetch or parse data or load data in tableview quickly or faster.

here is a example of my code

 let base_url = "http://saburia.com/"
 // guard let url = URL(string: "(base_url)login_verifications?phone=(textView.text ?? "")&device=ios") else return 
 let ID = UserDefaults.standard.string(forKey: "pos_no") ?? ""
 guard let url = URL(string: "http://saburia.com/api?cat_name=1&pos_no=(ID)") else return 
 URLSession.shared.dataTask(with: url) (data, response, err) in
 guard let data = data else return 
 do 
 //let fetchedData = try JSONDecoder().decode([uniDpt_list].self, from: data)
 let myjson = try JSONSerialization.jsonObject(with: data, options: JSONSerialization.ReadingOptions.mutableContainers) as? [Any]


 print(myjson)




 var sectiontitle : [Any] = []
 var catLink : [Any] = []

 for game in myjson! as [AnyObject] 
 // print(game["name"]!!)
 sectiontitle.append(game["cat_name"]!!)
 catLink.append(game["cat_link"]!)
 // print(dptArray)

 
 self.CategoriesSection = sectiontitle as! [String]
 self.categoryLink = catLink as! [String]

 print(self.categoryLink)

 DispatchQueue.main.async 

 self.myTableView.reloadData()

 
 catch let jsonErr 
 print("Error serializing json:", jsonErr)
 

 .resume()

ios json swift api

share|improve this question

edited Mar 8 at 17:59

rmaddy

245k27326389

asked Mar 8 at 12:52

hussnain ahmadhussnain ahmad

248

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  What do you mean by “very slow”? You can use the time profiler instrument to see how long each line takes. But the slowness might be the network connection
  
  – Aaron Brager
  Mar 8 at 12:55
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Its takes a minute to load data mostly.
  
  – hussnain ahmad
  Mar 8 at 12:57
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I don't know if using Decodable is faster or slower but it would definitely improve your code with less casting
  
  – Joakim Danielson
  Mar 8 at 12:58
  

  
  
  
  

add a comment | 

-2

I working on a IOS project based on json API totally. I have completed my project almost but i have an issue regarding json API response rate, it is very slow and it takes time to load data in tableview. I am looking for a best way to fetch or parse data or load data in tableview quickly or faster.

here is a example of my code

 let base_url = "http://saburia.com/"
 // guard let url = URL(string: "(base_url)login_verifications?phone=(textView.text ?? "")&device=ios") else return 
 let ID = UserDefaults.standard.string(forKey: "pos_no") ?? ""
 guard let url = URL(string: "http://saburia.com/api?cat_name=1&pos_no=(ID)") else return 
 URLSession.shared.dataTask(with: url) (data, response, err) in
 guard let data = data else return 
 do 
 //let fetchedData = try JSONDecoder().decode([uniDpt_list].self, from: data)
 let myjson = try JSONSerialization.jsonObject(with: data, options: JSONSerialization.ReadingOptions.mutableContainers) as? [Any]


 print(myjson)




 var sectiontitle : [Any] = []
 var catLink : [Any] = []

 for game in myjson! as [AnyObject] 
 // print(game["name"]!!)
 sectiontitle.append(game["cat_name"]!!)
 catLink.append(game["cat_link"]!)
 // print(dptArray)

 
 self.CategoriesSection = sectiontitle as! [String]
 self.categoryLink = catLink as! [String]

 print(self.categoryLink)

 DispatchQueue.main.async 

 self.myTableView.reloadData()

 
 catch let jsonErr 
 print("Error serializing json:", jsonErr)
 

 .resume()

ios json swift api

share|improve this question

edited Mar 8 at 17:59

rmaddy

245k27326389

asked Mar 8 at 12:52

hussnain ahmadhussnain ahmad

248

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  What do you mean by “very slow”? You can use the time profiler instrument to see how long each line takes. But the slowness might be the network connection
  
  – Aaron Brager
  Mar 8 at 12:55
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Its takes a minute to load data mostly.
  
  – hussnain ahmad
  Mar 8 at 12:57
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I don't know if using Decodable is faster or slower but it would definitely improve your code with less casting
  
  – Joakim Danielson
  Mar 8 at 12:58
  

  
  
  
  

add a comment | 

I working on a IOS project based on json API totally. I have completed my project almost but i have an issue regarding json API response rate, it is very slow and it takes time to load data in tableview. I am looking for a best way to fetch or parse data or load data in tableview quickly or faster.

here is a example of my code

 let base_url = "http://saburia.com/"
 // guard let url = URL(string: "(base_url)login_verifications?phone=(textView.text ?? "")&device=ios") else return 
 let ID = UserDefaults.standard.string(forKey: "pos_no") ?? ""
 guard let url = URL(string: "http://saburia.com/api?cat_name=1&pos_no=(ID)") else return 
 URLSession.shared.dataTask(with: url) (data, response, err) in
 guard let data = data else return 
 do 
 //let fetchedData = try JSONDecoder().decode([uniDpt_list].self, from: data)
 let myjson = try JSONSerialization.jsonObject(with: data, options: JSONSerialization.ReadingOptions.mutableContainers) as? [Any]


 print(myjson)




 var sectiontitle : [Any] = []
 var catLink : [Any] = []

 for game in myjson! as [AnyObject] 
 // print(game["name"]!!)
 sectiontitle.append(game["cat_name"]!!)
 catLink.append(game["cat_link"]!)
 // print(dptArray)

 
 self.CategoriesSection = sectiontitle as! [String]
 self.categoryLink = catLink as! [String]

 print(self.categoryLink)

 DispatchQueue.main.async 

 self.myTableView.reloadData()

 
 catch let jsonErr 
 print("Error serializing json:", jsonErr)
 

 .resume()

ios json swift api

share|improve this question

edited Mar 8 at 17:59

rmaddy

245k27326389

asked Mar 8 at 12:52

hussnain ahmadhussnain ahmad

248

 let base_url = "http://saburia.com/"
 // guard let url = URL(string: "(base_url)login_verifications?phone=(textView.text ?? "")&device=ios") else return 
 let ID = UserDefaults.standard.string(forKey: "pos_no") ?? ""
 guard let url = URL(string: "http://saburia.com/api?cat_name=1&pos_no=(ID)") else return 
 URLSession.shared.dataTask(with: url) (data, response, err) in
 guard let data = data else return 
 do 
 //let fetchedData = try JSONDecoder().decode([uniDpt_list].self, from: data)
 let myjson = try JSONSerialization.jsonObject(with: data, options: JSONSerialization.ReadingOptions.mutableContainers) as? [Any]


 print(myjson)




 var sectiontitle : [Any] = []
 var catLink : [Any] = []

 for game in myjson! as [AnyObject] 
 // print(game["name"]!!)
 sectiontitle.append(game["cat_name"]!!)
 catLink.append(game["cat_link"]!)
 // print(dptArray)

 
 self.CategoriesSection = sectiontitle as! [String]
 self.categoryLink = catLink as! [String]

 print(self.categoryLink)

 DispatchQueue.main.async 

 self.myTableView.reloadData()

 
 catch let jsonErr 
 print("Error serializing json:", jsonErr)
 

 .resume()

share|improve this question

edited Mar 8 at 17:59

rmaddy

245k27326389

asked Mar 8 at 12:52

hussnain ahmadhussnain ahmad

248

share|improve this question

edited Mar 8 at 17:59

rmaddy

245k27326389

asked Mar 8 at 12:52

hussnain ahmadhussnain ahmad

248

edited Mar 8 at 17:59

rmaddy

245k27326389

edited Mar 8 at 17:59

rmaddy

245k27326389

asked Mar 8 at 12:52

hussnain ahmadhussnain ahmad

248

asked Mar 8 at 12:52

hussnain ahmadhussnain ahmad

248